all living things interact with their environment, both biotic and abiotic most living things...
TRANSCRIPT
Environmental Chapter 1 Section 3
All living things interact with their environment, both biotic and abiotic
Most living things produce more offspring than can survive
Interactions
Most living things produce more offspring than can survive
Populations cannot grow indefinitely The population can only be as big as the
resources will allow The environment contains a finite amount of
food, water, living space These factors are limiting factors because
any one of these factors can limit the size of the population
Limiting Factors
The largest population that can be supported in a given environment
When a population grows larger than its carrying capacity, limiting factors in the environment cause the population to decrease.
Carrying Capacity
Four main ways that species interact with one another
Competition Coevolution Predator/Prey Symbiosis
Interactions Among Organisms
Can occur within populations and within communities
Organisms try to use the same resources
Competition
Long-term change that takes place in two species because of their interactions with one another.
Coevolution
Prey - organism that gets eaten Predator – organism that eats the prey Both predators and prey evolve in response
to one another in order to survive
Predator/Prey
Close long-term relationship between different species in which at least one species benefits
3 types
mutualism – both species benefits – ex coral and algae
commensalism – one species benefits, the other is unaffected – ex sharks and remoras
Parasitism – one species benefits, the other is harmed
Parasite – the organism that benefits Host – the organism that is harmed
Ex- deer tick is parasite, deer is host
Symbiosis